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Diffstat (limited to '')
| -rw-r--r-- | netwerk/protocol/http/Http3Session.cpp | 2522 |
1 files changed, 2522 insertions, 0 deletions
diff --git a/netwerk/protocol/http/Http3Session.cpp b/netwerk/protocol/http/Http3Session.cpp new file mode 100644 index 0000000000..0369da94ac --- /dev/null +++ b/netwerk/protocol/http/Http3Session.cpp @@ -0,0 +1,2522 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim:set ts=4 sw=2 et cindent: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "ASpdySession.h" // because of SoftStreamError() +#include "Http3Session.h" +#include "Http3Stream.h" +#include "Http3StreamBase.h" +#include "Http3WebTransportSession.h" +#include "Http3WebTransportStream.h" +#include "HttpConnectionUDP.h" +#include "HttpLog.h" +#include "QuicSocketControl.h" +#include "SSLServerCertVerification.h" +#include "SSLTokensCache.h" +#include "ScopedNSSTypes.h" +#include "mozilla/RandomNum.h" +#include "mozilla/RefPtr.h" +#include "mozilla/Telemetry.h" +#include "mozilla/net/DNS.h" +#include "nsHttpHandler.h" +#include "nsIHttpActivityObserver.h" +#include "nsIOService.h" +#include "nsITLSSocketControl.h" +#include "nsNetAddr.h" +#include "nsQueryObject.h" +#include "nsSocketTransportService2.h" +#include "nsThreadUtils.h" +#include "sslerr.h" + +namespace mozilla::net { + +const uint64_t HTTP3_APP_ERROR_NO_ERROR = 0x100; +// const uint64_t HTTP3_APP_ERROR_GENERAL_PROTOCOL_ERROR = 0x101; +// const uint64_t HTTP3_APP_ERROR_INTERNAL_ERROR = 0x102; +// const uint64_t HTTP3_APP_ERROR_STREAM_CREATION_ERROR = 0x103; +// const uint64_t HTTP3_APP_ERROR_CLOSED_CRITICAL_STREAM = 0x104; +// const uint64_t HTTP3_APP_ERROR_FRAME_UNEXPECTED = 0x105; +// const uint64_t HTTP3_APP_ERROR_FRAME_ERROR = 0x106; +// const uint64_t HTTP3_APP_ERROR_EXCESSIVE_LOAD = 0x107; +// const uint64_t HTTP3_APP_ERROR_ID_ERROR = 0x108; +// const uint64_t HTTP3_APP_ERROR_SETTINGS_ERROR = 0x109; +// const uint64_t HTTP3_APP_ERROR_MISSING_SETTINGS = 0x10a; +const uint64_t HTTP3_APP_ERROR_REQUEST_REJECTED = 0x10b; +const uint64_t HTTP3_APP_ERROR_REQUEST_CANCELLED = 0x10c; +// const uint64_t HTTP3_APP_ERROR_REQUEST_INCOMPLETE = 0x10d; +// const uint64_t HTTP3_APP_ERROR_EARLY_RESPONSE = 0x10e; +// const uint64_t HTTP3_APP_ERROR_CONNECT_ERROR = 0x10f; +const uint64_t HTTP3_APP_ERROR_VERSION_FALLBACK = 0x110; + +// const uint32_t UDP_MAX_PACKET_SIZE = 4096; +const uint32_t MAX_PTO_COUNTS = 16; + +const uint32_t TRANSPORT_ERROR_STATELESS_RESET = 20; + +NS_IMPL_ADDREF(Http3Session) +NS_IMPL_RELEASE(Http3Session) +NS_INTERFACE_MAP_BEGIN(Http3Session) + NS_INTERFACE_MAP_ENTRY(nsAHttpConnection) + NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference) + NS_INTERFACE_MAP_ENTRY_CONCRETE(Http3Session) +NS_INTERFACE_MAP_END + +Http3Session::Http3Session() { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + LOG(("Http3Session::Http3Session [this=%p]", this)); + + mCurrentBrowserId = gHttpHandler->ConnMgr()->CurrentBrowserId(); + mThroughCaptivePortal = gHttpHandler->GetThroughCaptivePortal(); +} + +static nsresult RawBytesToNetAddr(uint16_t aFamily, const uint8_t* aRemoteAddr, + uint16_t remotePort, NetAddr* netAddr) { + if (aFamily == AF_INET) { + netAddr->inet.family = AF_INET; + netAddr->inet.port = htons(remotePort); + memcpy(&netAddr->inet.ip, aRemoteAddr, 4); + } else if (aFamily == AF_INET6) { + netAddr->inet6.family = AF_INET6; + netAddr->inet6.port = htons(remotePort); + memcpy(&netAddr->inet6.ip.u8, aRemoteAddr, 16); + } else { + return NS_ERROR_UNEXPECTED; + } + + return NS_OK; +} + +nsresult Http3Session::Init(const nsHttpConnectionInfo* aConnInfo, + nsINetAddr* aSelfAddr, nsINetAddr* aPeerAddr, + HttpConnectionUDP* udpConn, uint32_t controlFlags, + nsIInterfaceRequestor* callbacks) { + LOG3(("Http3Session::Init %p", this)); + + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + MOZ_ASSERT(udpConn); + + mConnInfo = aConnInfo->Clone(); + mNetAddr = aPeerAddr; + + bool httpsProxy = + aConnInfo->ProxyInfo() ? aConnInfo->ProxyInfo()->IsHTTPS() : false; + + // Create security control and info object for quic. + mSocketControl = new QuicSocketControl( + httpsProxy ? aConnInfo->ProxyInfo()->Host() : aConnInfo->GetOrigin(), + httpsProxy ? aConnInfo->ProxyInfo()->Port() : aConnInfo->OriginPort(), + controlFlags, this); + + NetAddr selfAddr; + MOZ_ALWAYS_SUCCEEDS(aSelfAddr->GetNetAddr(&selfAddr)); + NetAddr peerAddr; + MOZ_ALWAYS_SUCCEEDS(aPeerAddr->GetNetAddr(&peerAddr)); + + LOG3( + ("Http3Session::Init origin=%s, alpn=%s, selfAddr=%s, peerAddr=%s," + " qpack table size=%u, max blocked streams=%u webtransport=%d " + "[this=%p]", + PromiseFlatCString(mConnInfo->GetOrigin()).get(), + PromiseFlatCString(mConnInfo->GetNPNToken()).get(), + selfAddr.ToString().get(), peerAddr.ToString().get(), + gHttpHandler->DefaultQpackTableSize(), + gHttpHandler->DefaultHttp3MaxBlockedStreams(), + mConnInfo->GetWebTransport(), this)); + + if (mConnInfo->GetWebTransport()) { + mWebTransportNegotiationStatus = WebTransportNegotiation::NEGOTIATING; + } + + uint32_t datagramSize = + StaticPrefs::network_webtransport_datagrams_enabled() + ? StaticPrefs::network_webtransport_datagram_size() + : 0; + nsresult rv = NeqoHttp3Conn::Init( + mConnInfo->GetOrigin(), mConnInfo->GetNPNToken(), selfAddr, peerAddr, + gHttpHandler->DefaultQpackTableSize(), + gHttpHandler->DefaultHttp3MaxBlockedStreams(), + StaticPrefs::network_http_http3_max_data(), + StaticPrefs::network_http_http3_max_stream_data(), + StaticPrefs::network_http_http3_version_negotiation_enabled(), + mConnInfo->GetWebTransport(), gHttpHandler->Http3QlogDir(), datagramSize, + StaticPrefs::network_http_http3_max_accumlated_time_ms(), + getter_AddRefs(mHttp3Connection)); + if (NS_FAILED(rv)) { + return rv; + } + + nsAutoCString peerId; + mSocketControl->GetPeerId(peerId); + nsTArray<uint8_t> token; + SessionCacheInfo info; + udpConn->ChangeConnectionState(ConnectionState::TLS_HANDSHAKING); + + if (StaticPrefs::network_http_http3_enable_0rtt() && + NS_SUCCEEDED(SSLTokensCache::Get(peerId, token, info))) { + LOG(("Found a resumption token in the cache.")); + mHttp3Connection->SetResumptionToken(token); + mSocketControl->SetSessionCacheInfo(std::move(info)); + if (mHttp3Connection->IsZeroRtt()) { + LOG(("Can send ZeroRtt data")); + RefPtr<Http3Session> self(this); + mState = ZERORTT; + udpConn->ChangeConnectionState(ConnectionState::ZERORTT); + mZeroRttStarted = TimeStamp::Now(); + // Let the nsHttpConnectionMgr know that the connection can accept + // transactions. + // We need to dispatch the following function to this thread so that + // it is executed after the current function. At this point a + // Http3Session is still being initialized and ReportHttp3Connection + // will try to dispatch transaction on this session therefore it + // needs to be executed after the initializationg is done. + DebugOnly<nsresult> rv = NS_DispatchToCurrentThread( + NS_NewRunnableFunction("Http3Session::ReportHttp3Connection", + [self]() { self->ReportHttp3Connection(); })); + NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), + "NS_DispatchToCurrentThread failed"); + } + } + + if (mState != ZERORTT) { + ZeroRttTelemetry(ZeroRttOutcome::NOT_USED); + } + + auto config = mConnInfo->GetEchConfig(); + if (config.IsEmpty()) { + if (StaticPrefs::security_tls_ech_grease_http3() && config.IsEmpty()) { + if ((RandomUint64().valueOr(0) % 100) >= + 100 - StaticPrefs::security_tls_ech_grease_probability()) { + // Setting an empty config enables GREASE mode. + mSocketControl->SetEchConfig(config); + mEchExtensionStatus = EchExtensionStatus::kGREASE; + } + } + } else if (gHttpHandler->EchConfigEnabled(true) && !config.IsEmpty()) { + mSocketControl->SetEchConfig(config); + mEchExtensionStatus = EchExtensionStatus::kReal; + HttpConnectionActivity activity( + mConnInfo->HashKey(), mConnInfo->GetOrigin(), mConnInfo->OriginPort(), + mConnInfo->EndToEndSSL(), !mConnInfo->GetEchConfig().IsEmpty(), + mConnInfo->IsHttp3()); + gHttpHandler->ObserveHttpActivityWithArgs( + activity, NS_ACTIVITY_TYPE_HTTP_CONNECTION, + NS_HTTP_ACTIVITY_SUBTYPE_ECH_SET, PR_Now(), 0, ""_ns); + } else { + mEchExtensionStatus = EchExtensionStatus::kNotPresent; + } + + // After this line, Http3Session and HttpConnectionUDP become a cycle. We put + // this line in the end of Http3Session::Init to make sure Http3Session can be + // released when Http3Session::Init early returned. + mUdpConn = udpConn; + return NS_OK; +} + +void Http3Session::DoSetEchConfig(const nsACString& aEchConfig) { + LOG(("Http3Session::DoSetEchConfig %p of length %zu", this, + aEchConfig.Length())); + nsTArray<uint8_t> config; + config.AppendElements( + reinterpret_cast<const uint8_t*>(aEchConfig.BeginReading()), + aEchConfig.Length()); + mHttp3Connection->SetEchConfig(config); +} + +nsresult Http3Session::SendPriorityUpdateFrame(uint64_t aStreamId, + uint8_t aPriorityUrgency, + bool aPriorityIncremental) { + return mHttp3Connection->PriorityUpdate(aStreamId, aPriorityUrgency, + aPriorityIncremental); +} + +// Shutdown the http3session and close all transactions. +void Http3Session::Shutdown() { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + + if (mTimer) { + mTimer->Cancel(); + } + mTimer = nullptr; + + bool isEchRetry = mError == mozilla::psm::GetXPCOMFromNSSError( + SSL_ERROR_ECH_RETRY_WITH_ECH); + bool allowToRetryWithDifferentIPFamily = + mBeforeConnectedError && + gHttpHandler->ConnMgr()->AllowToRetryDifferentIPFamilyForHttp3(mConnInfo, + mError); + LOG(("Http3Session::Shutdown %p allowToRetryWithDifferentIPFamily=%d", this, + allowToRetryWithDifferentIPFamily)); + if ((mBeforeConnectedError || + (mError == NS_ERROR_NET_HTTP3_PROTOCOL_ERROR)) && + (mError != + mozilla::psm::GetXPCOMFromNSSError(SSL_ERROR_BAD_CERT_DOMAIN)) && + !isEchRetry && !mConnInfo->GetWebTransport() && + !allowToRetryWithDifferentIPFamily && !mDontExclude) { + gHttpHandler->ExcludeHttp3(mConnInfo); + } + + for (const auto& stream : mStreamTransactionHash.Values()) { + if (mBeforeConnectedError) { + // We have an error before we were connected, just restart transactions. + // The transaction restart code path will remove AltSvc mapping and the + // direct path will be used. + MOZ_ASSERT(NS_FAILED(mError)); + if (isEchRetry) { + // We have to propagate this error to nsHttpTransaction, so the + // transaction will be restarted with a new echConfig. + stream->Close(mError); + } else { + if (allowToRetryWithDifferentIPFamily && mNetAddr) { + NetAddr addr; + mNetAddr->GetNetAddr(&addr); + gHttpHandler->ConnMgr()->SetRetryDifferentIPFamilyForHttp3( + mConnInfo, addr.raw.family); + // We want the transaction to be restarted with the same connection + // info. + stream->Transaction()->DoNotRemoveAltSvc(); + // We already set the preference in SetRetryDifferentIPFamilyForHttp3, + // so we want to keep it for the next retry. + stream->Transaction()->DoNotResetIPFamilyPreference(); + stream->Close(NS_ERROR_NET_RESET); + // Since Http3Session::Shutdown can be called multiple times, we set + // mDontExclude for not putting this domain into the excluded list. + mDontExclude = true; + } else { + stream->Close(NS_ERROR_NET_RESET); + } + } + } else if (!stream->HasStreamId()) { + if (NS_SUCCEEDED(mError)) { + // Connection has not been started yet. We can restart it. + stream->Transaction()->DoNotRemoveAltSvc(); + } + stream->Close(NS_ERROR_NET_RESET); + } else if (stream->GetHttp3Stream() && + stream->GetHttp3Stream()->RecvdData()) { + stream->Close(NS_ERROR_NET_PARTIAL_TRANSFER); + } else if (mError == NS_ERROR_NET_HTTP3_PROTOCOL_ERROR) { + stream->Close(NS_ERROR_NET_HTTP3_PROTOCOL_ERROR); + } else if (mError == NS_ERROR_NET_RESET) { + stream->Close(NS_ERROR_NET_RESET); + } else { + stream->Close(NS_ERROR_ABORT); + } + RemoveStreamFromQueues(stream); + if (stream->HasStreamId()) { + mStreamIdHash.Remove(stream->StreamId()); + } + } + mStreamTransactionHash.Clear(); + + for (const auto& stream : mWebTransportSessions) { + stream->Close(NS_ERROR_ABORT); + RemoveStreamFromQueues(stream); + mStreamIdHash.Remove(stream->StreamId()); + } + mWebTransportSessions.Clear(); + + for (const auto& stream : mWebTransportStreams) { + stream->Close(NS_ERROR_ABORT); + RemoveStreamFromQueues(stream); + mStreamIdHash.Remove(stream->StreamId()); + } + + RefPtr<Http3StreamBase> stream; + while ((stream = mQueuedStreams.PopFront())) { + LOG(("Close remaining stream in queue:%p", stream.get())); + stream->SetQueued(false); + stream->Close(NS_ERROR_ABORT); + } + mWebTransportStreams.Clear(); +} + +Http3Session::~Http3Session() { + LOG3(("Http3Session::~Http3Session %p", this)); + + EchOutcomeTelemetry(); + Telemetry::Accumulate(Telemetry::HTTP3_REQUEST_PER_CONN, mTransactionCount); + Telemetry::Accumulate(Telemetry::HTTP3_BLOCKED_BY_STREAM_LIMIT_PER_CONN, + mBlockedByStreamLimitCount); + Telemetry::Accumulate(Telemetry::HTTP3_TRANS_BLOCKED_BY_STREAM_LIMIT_PER_CONN, + mTransactionsBlockedByStreamLimitCount); + + Telemetry::Accumulate( + Telemetry::HTTP3_TRANS_SENDING_BLOCKED_BY_FLOW_CONTROL_PER_CONN, + mTransactionsSenderBlockedByFlowControlCount); + + if (mThroughCaptivePortal) { + if (mTotalBytesRead || mTotalBytesWritten) { + auto total = + Clamp<uint32_t>((mTotalBytesRead >> 10) + (mTotalBytesWritten >> 10), + 0, std::numeric_limits<uint32_t>::max()); + Telemetry::ScalarAdd( + Telemetry::ScalarID::NETWORKING_DATA_TRANSFERRED_CAPTIVE_PORTAL, + total); + } + + Telemetry::ScalarAdd( + Telemetry::ScalarID::NETWORKING_HTTP_CONNECTIONS_CAPTIVE_PORTAL, 1); + } + + Shutdown(); +} + +// This function may return a socket error. +// It will not return an error if socket error is +// NS_BASE_STREAM_WOULD_BLOCK. +// A caller of this function will close the Http3 connection +// in case of a error. +// The only callers is: +// HttpConnectionUDP::RecvData -> +// Http3Session::RecvData +void Http3Session::ProcessInput(nsIUDPSocket* socket) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + MOZ_ASSERT(mUdpConn); + + LOG(("Http3Session::ProcessInput writer=%p [this=%p state=%d]", + mUdpConn.get(), this, mState)); + + while (true) { + nsTArray<uint8_t> data; + NetAddr addr{}; + // RecvWithAddr actually does not return an error. + nsresult rv = socket->RecvWithAddr(&addr, data); + MOZ_ALWAYS_SUCCEEDS(rv); + if (NS_FAILED(rv) || data.IsEmpty()) { + break; + } + rv = mHttp3Connection->ProcessInput(addr, data); + MOZ_ALWAYS_SUCCEEDS(rv); + if (NS_FAILED(rv)) { + break; + } + + LOG(("Http3Session::ProcessInput received=%zu", data.Length())); + mTotalBytesRead += data.Length(); + } +} + +nsresult Http3Session::ProcessTransactionRead(uint64_t stream_id) { + RefPtr<Http3StreamBase> stream = mStreamIdHash.Get(stream_id); + if (!stream) { + LOG( + ("Http3Session::ProcessTransactionRead - stream not found " + "stream_id=0x%" PRIx64 " [this=%p].", + stream_id, this)); + return NS_OK; + } + + return ProcessTransactionRead(stream); +} + +nsresult Http3Session::ProcessTransactionRead(Http3StreamBase* stream) { + nsresult rv = stream->WriteSegments(); + + if (ASpdySession::SoftStreamError(rv) || stream->Done()) { + LOG3( + ("Http3Session::ProcessSingleTransactionRead session=%p stream=%p " + "0x%" PRIx64 " cleanup stream rv=0x%" PRIx32 " done=%d.\n", + this, stream, stream->StreamId(), static_cast<uint32_t>(rv), + stream->Done())); + CloseStream(stream, + (rv == NS_BINDING_RETARGETED) ? NS_BINDING_RETARGETED : NS_OK); + return NS_OK; + } + + if (NS_FAILED(rv) && rv != NS_BASE_STREAM_WOULD_BLOCK) { + return rv; + } + return NS_OK; +} + +nsresult Http3Session::ProcessEvents() { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + + LOG(("Http3Session::ProcessEvents [this=%p]", this)); + + // We need an array to pick up header data or a resumption token. + nsTArray<uint8_t> data; + Http3Event event{}; + event.tag = Http3Event::Tag::NoEvent; + + nsresult rv = mHttp3Connection->GetEvent(&event, data); + if (NS_FAILED(rv)) { + LOG(("Http3Session::ProcessEvents [this=%p] rv=%" PRIx32, this, + static_cast<uint32_t>(rv))); + return rv; + } + + while (event.tag != Http3Event::Tag::NoEvent) { + switch (event.tag) { + case Http3Event::Tag::HeaderReady: { + MOZ_ASSERT(mState == CONNECTED); + LOG(("Http3Session::ProcessEvents - HeaderReady")); + uint64_t id = event.header_ready.stream_id; + + RefPtr<Http3StreamBase> stream = mStreamIdHash.Get(id); + if (!stream) { + LOG( + ("Http3Session::ProcessEvents - HeaderReady - stream not found " + "stream_id=0x%" PRIx64 " [this=%p].", + id, this)); + break; + } + + MOZ_RELEASE_ASSERT(stream->GetHttp3Stream(), + "This must be a Http3Stream"); + + stream->SetResponseHeaders(data, event.header_ready.fin, + event.header_ready.interim); + + rv = ProcessTransactionRead(stream); + + if (NS_FAILED(rv)) { + LOG(("Http3Session::ProcessEvents [this=%p] rv=%" PRIx32, this, + static_cast<uint32_t>(rv))); + return rv; + } + + mUdpConn->NotifyDataRead(); + break; + } + case Http3Event::Tag::DataReadable: { + MOZ_ASSERT(mState == CONNECTED); + LOG(("Http3Session::ProcessEvents - DataReadable")); + uint64_t id = event.data_readable.stream_id; + + nsresult rv = ProcessTransactionRead(id); + + if (NS_FAILED(rv)) { + LOG(("Http3Session::ProcessEvents [this=%p] rv=%" PRIx32, this, + static_cast<uint32_t>(rv))); + return rv; + } + break; + } + case Http3Event::Tag::DataWritable: { + MOZ_ASSERT(CanSendData()); + LOG(("Http3Session::ProcessEvents - DataWritable")); + + RefPtr<Http3StreamBase> stream = + mStreamIdHash.Get(event.data_writable.stream_id); + + if (stream) { + StreamReadyToWrite(stream); + } + } break; + case Http3Event::Tag::Reset: + LOG(("Http3Session::ProcessEvents %p - Reset", this)); + ResetOrStopSendingRecvd(event.reset.stream_id, event.reset.error, + RESET); + break; + case Http3Event::Tag::StopSending: + LOG( + ("Http3Session::ProcessEvents %p - StopSeniding with error " + "0x%" PRIx64, + this, event.stop_sending.error)); + if (event.stop_sending.error == HTTP3_APP_ERROR_NO_ERROR) { + RefPtr<Http3StreamBase> stream = + mStreamIdHash.Get(event.data_writable.stream_id); + if (stream) { + RefPtr<Http3Stream> httpStream = stream->GetHttp3Stream(); + MOZ_RELEASE_ASSERT(httpStream, "This must be a Http3Stream"); + httpStream->StopSending(); + } + } else { + ResetOrStopSendingRecvd(event.reset.stream_id, event.reset.error, + STOP_SENDING); + } + break; + case Http3Event::Tag::PushPromise: + LOG(("Http3Session::ProcessEvents - PushPromise")); + break; + case Http3Event::Tag::PushHeaderReady: + LOG(("Http3Session::ProcessEvents - PushHeaderReady")); + break; + case Http3Event::Tag::PushDataReadable: + LOG(("Http3Session::ProcessEvents - PushDataReadable")); + break; + case Http3Event::Tag::PushCanceled: + LOG(("Http3Session::ProcessEvents - PushCanceled")); + break; + case Http3Event::Tag::RequestsCreatable: + LOG(("Http3Session::ProcessEvents - StreamCreatable")); + ProcessPending(); + break; + case Http3Event::Tag::AuthenticationNeeded: + LOG(("Http3Session::ProcessEvents - AuthenticationNeeded %d", + mAuthenticationStarted)); + if (!mAuthenticationStarted) { + mAuthenticationStarted = true; + LOG(("Http3Session::ProcessEvents - AuthenticationNeeded called")); + CallCertVerification(Nothing()); + } + break; + case Http3Event::Tag::ZeroRttRejected: + LOG(("Http3Session::ProcessEvents - ZeroRttRejected")); + if (mState == ZERORTT) { + mState = INITIALIZING; + mTransactionCount = 0; + Finish0Rtt(true); + ZeroRttTelemetry(ZeroRttOutcome::USED_REJECTED); + } + break; + case Http3Event::Tag::ResumptionToken: { + LOG(("Http3Session::ProcessEvents - ResumptionToken")); + if (StaticPrefs::network_http_http3_enable_0rtt() && !data.IsEmpty()) { + LOG(("Got a resumption token")); + nsAutoCString peerId; + mSocketControl->GetPeerId(peerId); + if (NS_FAILED(SSLTokensCache::Put( + peerId, data.Elements(), data.Length(), mSocketControl, + PR_Now() + event.resumption_token.expire_in))) { + LOG(("Adding resumption token failed")); + } + } + } break; + case Http3Event::Tag::ConnectionConnected: { + LOG(("Http3Session::ProcessEvents - ConnectionConnected")); + bool was0RTT = mState == ZERORTT; + mState = CONNECTED; + SetSecInfo(); + mSocketControl->HandshakeCompleted(); + if (was0RTT) { + Finish0Rtt(false); + ZeroRttTelemetry(ZeroRttOutcome::USED_SUCCEEDED); + } + + OnTransportStatus(mSocketTransport, NS_NET_STATUS_CONNECTED_TO, 0); + // Also send the NS_NET_STATUS_TLS_HANDSHAKE_ENDED event. + OnTransportStatus(mSocketTransport, NS_NET_STATUS_TLS_HANDSHAKE_ENDED, + 0); + + ReportHttp3Connection(); + // Maybe call ResumeSend: + // In case ZeroRtt has been used and it has been rejected, 2 events will + // be received: ZeroRttRejected and ConnectionConnected. ZeroRttRejected + // that will put all transaction into mReadyForWrite queue and it will + // call MaybeResumeSend, but that will not have an effect because the + // connection is ont in CONNECTED state. When ConnectionConnected event + // is received call MaybeResumeSend to trigger reads for the + // zero-rtt-rejected transactions. + MaybeResumeSend(); + } break; + case Http3Event::Tag::GoawayReceived: + LOG(("Http3Session::ProcessEvents - GoawayReceived")); + mUdpConn->SetCloseReason(ConnectionCloseReason::GO_AWAY); + mGoawayReceived = true; + break; + case Http3Event::Tag::ConnectionClosing: + LOG(("Http3Session::ProcessEvents - ConnectionClosing")); + if (NS_SUCCEEDED(mError) && !IsClosing()) { + mError = NS_ERROR_NET_HTTP3_PROTOCOL_ERROR; + CloseConnectionTelemetry(event.connection_closing.error, true); + + auto isStatelessResetOrNoError = [](CloseError& aError) -> bool { + if (aError.tag == CloseError::Tag::TransportInternalErrorOther && + aError.transport_internal_error_other._0 == + TRANSPORT_ERROR_STATELESS_RESET) { + return true; + } + if (aError.tag == CloseError::Tag::TransportError && + aError.transport_error._0 == 0) { + return true; + } + if (aError.tag == CloseError::Tag::PeerError && + aError.peer_error._0 == 0) { + return true; + } + if (aError.tag == CloseError::Tag::AppError && + aError.app_error._0 == HTTP3_APP_ERROR_NO_ERROR) { + return true; + } + if (aError.tag == CloseError::Tag::PeerAppError && + aError.peer_app_error._0 == HTTP3_APP_ERROR_NO_ERROR) { + return true; + } + return false; + }; + if (isStatelessResetOrNoError(event.connection_closing.error)) { + mError = NS_ERROR_NET_RESET; + } + if (event.connection_closing.error.tag == CloseError::Tag::EchRetry) { + mSocketControl->SetRetryEchConfig(Substring( + reinterpret_cast<const char*>(data.Elements()), data.Length())); + mError = psm::GetXPCOMFromNSSError(SSL_ERROR_ECH_RETRY_WITH_ECH); + } + } + return mError; + break; + case Http3Event::Tag::ConnectionClosed: + LOG(("Http3Session::ProcessEvents - ConnectionClosed")); + if (NS_SUCCEEDED(mError)) { + mError = NS_ERROR_NET_TIMEOUT; + mUdpConn->SetCloseReason(ConnectionCloseReason::IDLE_TIMEOUT); + CloseConnectionTelemetry(event.connection_closed.error, false); + } + mIsClosedByNeqo = true; + if (event.connection_closed.error.tag == CloseError::Tag::EchRetry) { + mSocketControl->SetRetryEchConfig(Substring( + reinterpret_cast<const char*>(data.Elements()), data.Length())); + mError = psm::GetXPCOMFromNSSError(SSL_ERROR_ECH_RETRY_WITH_ECH); + } + LOG(("Http3Session::ProcessEvents - ConnectionClosed error=%" PRIx32, + static_cast<uint32_t>(mError))); + // We need to return here and let HttpConnectionUDP close the session. + return mError; + break; + case Http3Event::Tag::EchFallbackAuthenticationNeeded: { + nsCString echPublicName(reinterpret_cast<const char*>(data.Elements()), + data.Length()); + LOG( + ("Http3Session::ProcessEvents - EchFallbackAuthenticationNeeded " + "echPublicName=%s", + echPublicName.get())); + if (!mAuthenticationStarted) { + mAuthenticationStarted = true; + CallCertVerification(Some(echPublicName)); + } + } break; + case Http3Event::Tag::WebTransport: { + switch (event.web_transport._0.tag) { + case WebTransportEventExternal::Tag::Negotiated: + LOG(("Http3Session::ProcessEvents - WebTransport %d", + event.web_transport._0.negotiated._0)); + MOZ_ASSERT(mWebTransportNegotiationStatus == + WebTransportNegotiation::NEGOTIATING); + mWebTransportNegotiationStatus = + event.web_transport._0.negotiated._0 + ? WebTransportNegotiation::SUCCEEDED + : WebTransportNegotiation::FAILED; + WebTransportNegotiationDone(); + break; + case WebTransportEventExternal::Tag::Session: { + MOZ_ASSERT(mState == CONNECTED); + + uint64_t id = event.web_transport._0.session._0; + LOG( + ("Http3Session::ProcessEvents - WebTransport Session " + " sessionId=0x%" PRIx64, + id)); + RefPtr<Http3StreamBase> stream = mStreamIdHash.Get(id); + if (!stream) { + LOG( + ("Http3Session::ProcessEvents - WebTransport Session - " + "stream not found " + "stream_id=0x%" PRIx64 " [this=%p].", + id, this)); + break; + } + + MOZ_RELEASE_ASSERT(stream->GetHttp3WebTransportSession(), + "It must be a WebTransport session"); + stream->SetResponseHeaders(data, false, false); + + rv = stream->WriteSegments(); + + if (ASpdySession::SoftStreamError(rv) || stream->Done()) { + LOG3( + ("Http3Session::ProcessSingleTransactionRead session=%p " + "stream=%p " + "0x%" PRIx64 " cleanup stream rv=0x%" PRIx32 " done=%d.\n", + this, stream.get(), stream->StreamId(), + static_cast<uint32_t>(rv), stream->Done())); + // We need to keep the transaction, so we can use it to remove the + // stream from mStreamTransactionHash. + nsAHttpTransaction* trans = stream->Transaction(); + if (mStreamTransactionHash.Contains(trans)) { + CloseStream(stream, (rv == NS_BINDING_RETARGETED) + ? NS_BINDING_RETARGETED + : NS_OK); + mStreamTransactionHash.Remove(trans); + } else { + stream->GetHttp3WebTransportSession()->TransactionIsDone( + (rv == NS_BINDING_RETARGETED) ? NS_BINDING_RETARGETED + : NS_OK); + } + break; + } + + if (NS_FAILED(rv) && rv != NS_BASE_STREAM_WOULD_BLOCK) { + LOG(("Http3Session::ProcessEvents [this=%p] rv=%" PRIx32, this, + static_cast<uint32_t>(rv))); + return rv; + } + } break; + case WebTransportEventExternal::Tag::SessionClosed: { + uint64_t id = event.web_transport._0.session_closed.stream_id; + LOG( + ("Http3Session::ProcessEvents - WebTransport SessionClosed " + " sessionId=0x%" PRIx64, + id)); + RefPtr<Http3StreamBase> stream = mStreamIdHash.Get(id); + if (!stream) { + LOG( + ("Http3Session::ProcessEvents - WebTransport SessionClosed - " + "stream not found " + "stream_id=0x%" PRIx64 " [this=%p].", + id, this)); + break; + } + + RefPtr<Http3WebTransportSession> wt = + stream->GetHttp3WebTransportSession(); + MOZ_RELEASE_ASSERT(wt, "It must be a WebTransport session"); + + bool cleanly = false; + + // TODO we do not handle the case when a WebTransport session stream + // is closed before headers are sent. + SessionCloseReasonExternal& reasonExternal = + event.web_transport._0.session_closed.reason; + uint32_t status = 0; + nsCString reason = ""_ns; + if (reasonExternal.tag == SessionCloseReasonExternal::Tag::Error) { + status = reasonExternal.error._0; + } else if (reasonExternal.tag == + SessionCloseReasonExternal::Tag::Status) { + status = reasonExternal.status._0; + cleanly = true; + } else { + status = reasonExternal.clean._0; + reason.Assign(reinterpret_cast<const char*>(data.Elements()), + data.Length()); + cleanly = true; + } + LOG(("reason.tag=%u err=%u data=%s\n", + static_cast<uint32_t>(reasonExternal.tag), status, + reason.get())); + wt->OnSessionClosed(cleanly, status, reason); + + } break; + case WebTransportEventExternal::Tag::NewStream: { + LOG( + ("Http3Session::ProcessEvents - WebTransport NewStream " + "streamId=0x%" PRIx64 " sessionId=0x%" PRIx64, + event.web_transport._0.new_stream.stream_id, + event.web_transport._0.new_stream.session_id)); + uint64_t sessionId = event.web_transport._0.new_stream.session_id; + RefPtr<Http3StreamBase> stream = mStreamIdHash.Get(sessionId); + if (!stream) { + LOG( + ("Http3Session::ProcessEvents - WebTransport NewStream - " + "session not found " + "sessionId=0x%" PRIx64 " [this=%p].", + sessionId, this)); + break; + } + + RefPtr<Http3WebTransportSession> wt = + stream->GetHttp3WebTransportSession(); + if (!wt) { + break; + } + + RefPtr<Http3WebTransportStream> wtStream = + wt->OnIncomingWebTransportStream( + event.web_transport._0.new_stream.stream_type, + event.web_transport._0.new_stream.stream_id); + if (!wtStream) { + break; + } + + // WebTransportStream is managed by Http3Session now. + mWebTransportStreams.AppendElement(wtStream); + mWebTransportStreamToSessionMap.InsertOrUpdate(wtStream->StreamId(), + wt->StreamId()); + mStreamIdHash.InsertOrUpdate(wtStream->StreamId(), + std::move(wtStream)); + } break; + case WebTransportEventExternal::Tag::Datagram: + LOG( + ("Http3Session::ProcessEvents - " + "WebTransportEventExternal::Tag::Datagram [this=%p]", + this)); + uint64_t sessionId = event.web_transport._0.datagram.session_id; + RefPtr<Http3StreamBase> stream = mStreamIdHash.Get(sessionId); + if (!stream) { + LOG( + ("Http3Session::ProcessEvents - WebTransport Datagram - " + "session not found " + "sessionId=0x%" PRIx64 " [this=%p].", + sessionId, this)); + break; + } + + RefPtr<Http3WebTransportSession> wt = + stream->GetHttp3WebTransportSession(); + if (!wt) { + break; + } + + wt->OnDatagramReceived(std::move(data)); + break; + } + } break; + default: + break; + } + // Delete previous content of data + data.TruncateLength(0); + rv = mHttp3Connection->GetEvent(&event, data); + if (NS_FAILED(rv)) { + LOG(("Http3Session::ProcessEvents [this=%p] rv=%" PRIx32, this, + static_cast<uint32_t>(rv))); + return rv; + } + } + + return NS_OK; +} // namespace net + +// This function may return a socket error. +// It will not return an error if socket error is +// NS_BASE_STREAM_WOULD_BLOCK. +// A Caller of this function will close the Http3 connection +// if this function returns an error. +// Callers are: +// 1) HttpConnectionUDP::OnQuicTimeoutExpired +// 2) HttpConnectionUDP::SendData -> +// Http3Session::SendData +nsresult Http3Session::ProcessOutput(nsIUDPSocket* socket) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + MOZ_ASSERT(mUdpConn); + + LOG(("Http3Session::ProcessOutput reader=%p, [this=%p]", mUdpConn.get(), + this)); + + mSocket = socket; + nsresult rv = mHttp3Connection->ProcessOutputAndSend( + this, + [](void* aContext, uint16_t aFamily, const uint8_t* aAddr, uint16_t aPort, + const uint8_t* aData, uint32_t aLength) { + Http3Session* self = (Http3Session*)aContext; + + uint32_t written = 0; + NetAddr addr; + if (NS_FAILED(RawBytesToNetAddr(aFamily, aAddr, aPort, &addr))) { + return NS_OK; + } + + LOG3( + ("Http3Session::ProcessOutput sending packet with %u bytes to %s " + "port=%d [this=%p].", + aLength, addr.ToString().get(), aPort, self)); + + nsresult rv = + self->mSocket->SendWithAddress(&addr, aData, aLength, &written); + + LOG(("Http3Session::ProcessOutput sending packet rv=%d osError=%d", + static_cast<int32_t>(rv), NS_FAILED(rv) ? PR_GetOSError() : 0)); + if (NS_FAILED(rv) && (rv != NS_BASE_STREAM_WOULD_BLOCK)) { + self->mSocketError = rv; + // If there was an error that is not NS_BASE_STREAM_WOULD_BLOCK + // return from here. We do not need to set a timer, because we + // will close the connection. + return rv; + } + self->mTotalBytesWritten += aLength; + self->mLastWriteTime = PR_IntervalNow(); + return NS_OK; + }, + [](void* aContext, uint64_t timeout) { + Http3Session* self = (Http3Session*)aContext; + self->SetupTimer(timeout); + }); + mSocket = nullptr; + return rv; +} + +// This is only called when timer expires. +// It is called by HttpConnectionUDP::OnQuicTimeout. +// If tihs function returns an error OnQuicTimeout will handle the error +// properly and close the connection. +nsresult Http3Session::ProcessOutputAndEvents(nsIUDPSocket* socket) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + // ProcessOutput could fire another timer. Need to unset the flag before that. + mTimerActive = false; + + MOZ_ASSERT(mTimerShouldTrigger); + + Telemetry::AccumulateTimeDelta(Telemetry::HTTP3_TIMER_DELAYED, + mTimerShouldTrigger, TimeStamp::Now()); + + mTimerShouldTrigger = TimeStamp(); + + nsresult rv = SendData(socket); + if (NS_FAILED(rv)) { + return rv; + } + return ProcessEvents(); +} + +void Http3Session::SetupTimer(uint64_t aTimeout) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + // UINT64_MAX indicated a no-op from neqo, which only happens when a + // connection is in or going to be Closed state. + if (aTimeout == UINT64_MAX) { + return; + } + + LOG3( + ("Http3Session::SetupTimer to %" PRIu64 "ms [this=%p].", aTimeout, this)); + + // Remember the time when the timer should trigger. + mTimerShouldTrigger = + TimeStamp::Now() + TimeDuration::FromMilliseconds(aTimeout); + + if (mTimerActive && mTimer) { + LOG( + (" -- Previous timer has not fired. Update the delay instead of " + "re-initializing the timer")); + mTimer->SetDelay(aTimeout); + return; + } + + nsresult rv = NS_NewTimerWithCallback( + getter_AddRefs(mTimer), + [conn = RefPtr{mUdpConn}](nsITimer*) { conn->OnQuicTimeoutExpired(); }, + aTimeout, nsITimer::TYPE_ONE_SHOT, + "net::HttpConnectionUDP::OnQuicTimeout"); + + mTimerActive = true; + + if (NS_FAILED(rv)) { + NS_DispatchToCurrentThread( + NewRunnableMethod("net::HttpConnectionUDP::OnQuicTimeoutExpired", + mUdpConn, &HttpConnectionUDP::OnQuicTimeoutExpired)); + } +} + +bool Http3Session::AddStream(nsAHttpTransaction* aHttpTransaction, + int32_t aPriority, + nsIInterfaceRequestor* aCallbacks) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + + nsHttpTransaction* trans = aHttpTransaction->QueryHttpTransaction(); + + if (!mConnection) { + // Get the connection from the first transaction. + mConnection = aHttpTransaction->Connection(); + } + + if (IsClosing()) { + LOG3( + ("Http3Session::AddStream %p atrans=%p trans=%p session unusable - " + "resched.\n", + this, aHttpTransaction, trans)); + aHttpTransaction->SetConnection(nullptr); + nsresult rv = gHttpHandler->InitiateTransaction(trans, trans->Priority()); + if (NS_FAILED(rv)) { + LOG3( + ("Http3Session::AddStream %p atrans=%p trans=%p failed to initiate " + "transaction (0x%" PRIx32 ").\n", + this, aHttpTransaction, trans, static_cast<uint32_t>(rv))); + } + return true; + } + + aHttpTransaction->SetConnection(this); + aHttpTransaction->OnActivated(); + // reset the read timers to wash away any idle time + mLastWriteTime = PR_IntervalNow(); + + ClassOfService cos; + if (trans) { + cos = trans->GetClassOfService(); + } + + Http3StreamBase* stream = nullptr; + + if (trans && trans->IsForWebTransport()) { + LOG3(("Http3Session::AddStream new WeTransport session %p atrans=%p.\n", + this, aHttpTransaction)); + stream = new Http3WebTransportSession(aHttpTransaction, this); + mHasWebTransportSession = true; + } else { + LOG3(("Http3Session::AddStream %p atrans=%p.\n", this, aHttpTransaction)); + stream = new Http3Stream(aHttpTransaction, this, cos, mCurrentBrowserId); + } + + mStreamTransactionHash.InsertOrUpdate(aHttpTransaction, RefPtr{stream}); + + if (mState == ZERORTT) { + if (!stream->Do0RTT()) { + LOG(("Http3Session %p will not get early data from Http3Stream %p", this, + stream)); + if (!mCannotDo0RTTStreams.Contains(stream)) { + mCannotDo0RTTStreams.AppendElement(stream); + } + if ((mWebTransportNegotiationStatus == + WebTransportNegotiation::NEGOTIATING) && + (trans && trans->IsForWebTransport())) { + LOG(("waiting for negotiation")); + mWaitingForWebTransportNegotiation.AppendElement(stream); + } + return true; + } + m0RTTStreams.AppendElement(stream); + } + + if ((mWebTransportNegotiationStatus == + WebTransportNegotiation::NEGOTIATING) && + (trans && trans->IsForWebTransport())) { + LOG(("waiting for negotiation")); + mWaitingForWebTransportNegotiation.AppendElement(stream); + return true; + } + + if (!mFirstHttpTransaction && !IsConnected()) { + mFirstHttpTransaction = aHttpTransaction->QueryHttpTransaction(); + LOG3(("Http3Session::AddStream first session=%p trans=%p ", this, + mFirstHttpTransaction.get())); + } + StreamReadyToWrite(stream); + + return true; +} + +bool Http3Session::CanReuse() { + // TODO: we assume "pooling" is disabled here, so we don't allow this session + // to be reused. "pooling" will be implemented in bug 1815735. + return CanSendData() && !(mGoawayReceived || mShouldClose) && + !mHasWebTransportSession; +} + +void Http3Session::QueueStream(Http3StreamBase* stream) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + MOZ_ASSERT(!stream->Queued()); + + LOG3(("Http3Session::QueueStream %p stream %p queued.", this, stream)); + + stream->SetQueued(true); + mQueuedStreams.Push(stream); +} + +void Http3Session::ProcessPending() { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + + RefPtr<Http3StreamBase> stream; + while ((stream = mQueuedStreams.PopFront())) { + LOG3(("Http3Session::ProcessPending %p stream %p woken from queue.", this, + stream.get())); + MOZ_ASSERT(stream->Queued()); + stream->SetQueued(false); + mReadyForWrite.Push(stream); + } + MaybeResumeSend(); +} + +static void RemoveStreamFromQueue(Http3StreamBase* aStream, + nsRefPtrDeque<Http3StreamBase>& queue) { + size_t size = queue.GetSize(); + for (size_t count = 0; count < size; ++count) { + RefPtr<Http3StreamBase> stream = queue.PopFront(); + if (stream != aStream) { + queue.Push(stream); + } + } +} + +void Http3Session::RemoveStreamFromQueues(Http3StreamBase* aStream) { + RemoveStreamFromQueue(aStream, mReadyForWrite); + RemoveStreamFromQueue(aStream, mQueuedStreams); + mSlowConsumersReadyForRead.RemoveElement(aStream); +} + +// This is called by Http3Stream::OnReadSegment. +// ProcessOutput will be called in Http3Session::ReadSegment that +// calls Http3Stream::OnReadSegment. +nsresult Http3Session::TryActivating( + const nsACString& aMethod, const nsACString& aScheme, + const nsACString& aAuthorityHeader, const nsACString& aPath, + const nsACString& aHeaders, uint64_t* aStreamId, Http3StreamBase* aStream) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + MOZ_ASSERT(*aStreamId == UINT64_MAX); + + LOG(("Http3Session::TryActivating [stream=%p, this=%p state=%d]", aStream, + this, mState)); + + if (IsClosing()) { + if (NS_FAILED(mError)) { + return mError; + } + return NS_ERROR_FAILURE; + } + + if (aStream->Queued()) { + LOG3(("Http3Session::TryActivating %p stream=%p already queued.\n", this, + aStream)); + return NS_BASE_STREAM_WOULD_BLOCK; + } + + if (mState == ZERORTT) { + if (!aStream->Do0RTT()) { + MOZ_ASSERT(!mCannotDo0RTTStreams.Contains(aStream)); + return NS_BASE_STREAM_WOULD_BLOCK; + } + } + + nsresult rv = NS_OK; + RefPtr<Http3Stream> httpStream = aStream->GetHttp3Stream(); + if (httpStream) { + rv = mHttp3Connection->Fetch( + aMethod, aScheme, aAuthorityHeader, aPath, aHeaders, aStreamId, + httpStream->PriorityUrgency(), httpStream->PriorityIncremental()); + } else { + MOZ_RELEASE_ASSERT(aStream->GetHttp3WebTransportSession(), + "It must be a WebTransport session"); + // Don't call CreateWebTransport if we are still waiting for the negotiation + // result. + if (mWebTransportNegotiationStatus == + WebTransportNegotiation::NEGOTIATING) { + if (!mWaitingForWebTransportNegotiation.Contains(aStream)) { + mWaitingForWebTransportNegotiation.AppendElement(aStream); + } + return NS_BASE_STREAM_WOULD_BLOCK; + } + rv = mHttp3Connection->CreateWebTransport(aAuthorityHeader, aPath, aHeaders, + aStreamId); + } + + if (NS_FAILED(rv)) { + LOG(("Http3Session::TryActivating returns error=0x%" PRIx32 "[stream=%p, " + "this=%p]", + static_cast<uint32_t>(rv), aStream, this)); + if (rv == NS_BASE_STREAM_WOULD_BLOCK) { + LOG3( + ("Http3Session::TryActivating %p stream=%p no room for more " + "concurrent streams\n", + this, aStream)); + mTransactionsBlockedByStreamLimitCount++; + if (mQueuedStreams.GetSize() == 0) { + mBlockedByStreamLimitCount++; + } + QueueStream(aStream); + return rv; + } + // Ignore this error. This may happen if some events are not handled yet. + // TODO we may try to add an assertion here. + return NS_OK; + } + + LOG(("Http3Session::TryActivating streamId=0x%" PRIx64 + " for stream=%p [this=%p].", + *aStreamId, aStream, this)); + + MOZ_ASSERT(*aStreamId != UINT64_MAX); + + if (mTransactionCount > 0 && mStreamIdHash.IsEmpty()) { + MOZ_ASSERT(mConnectionIdleStart); + MOZ_ASSERT(mFirstStreamIdReuseIdleConnection.isNothing()); + + mConnectionIdleEnd = TimeStamp::Now(); + mFirstStreamIdReuseIdleConnection = Some(*aStreamId); + } + mStreamIdHash.InsertOrUpdate(*aStreamId, RefPtr{aStream}); + mTransactionCount++; + + return NS_OK; +} + +// This is called by Http3WebTransportStream::OnReadSegment. +// TODO: this function is almost the same as TryActivating(). +// We should try to reduce the duplicate code. +nsresult Http3Session::TryActivatingWebTransportStream( + uint64_t* aStreamId, Http3StreamBase* aStream) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + MOZ_ASSERT(*aStreamId == UINT64_MAX); + + LOG( + ("Http3Session::TryActivatingWebTransportStream [stream=%p, this=%p " + "state=%d]", + aStream, this, mState)); + + if (IsClosing()) { + if (NS_FAILED(mError)) { + return mError; + } + return NS_ERROR_FAILURE; + } + + if (aStream->Queued()) { + LOG3( + ("Http3Session::TryActivatingWebTransportStream %p stream=%p already " + "queued.\n", + this, aStream)); + return NS_BASE_STREAM_WOULD_BLOCK; + } + + nsresult rv = NS_OK; + RefPtr<Http3WebTransportStream> wtStream = + aStream->GetHttp3WebTransportStream(); + MOZ_RELEASE_ASSERT(wtStream, "It must be a WebTransport stream"); + rv = mHttp3Connection->CreateWebTransportStream( + wtStream->SessionId(), wtStream->StreamType(), aStreamId); + + if (NS_FAILED(rv)) { + LOG(( + "Http3Session::TryActivatingWebTransportStream returns error=0x%" PRIx32 + "[stream=%p, " + "this=%p]", + static_cast<uint32_t>(rv), aStream, this)); + if (rv == NS_BASE_STREAM_WOULD_BLOCK) { + LOG3( + ("Http3Session::TryActivatingWebTransportStream %p stream=%p no room " + "for more " + "concurrent streams\n", + this, aStream)); + QueueStream(aStream); + return rv; + } + + return rv; + } + + LOG(("Http3Session::TryActivatingWebTransportStream streamId=0x%" PRIx64 + " for stream=%p [this=%p].", + *aStreamId, aStream, this)); + + MOZ_ASSERT(*aStreamId != UINT64_MAX); + + RefPtr<Http3StreamBase> session = mStreamIdHash.Get(wtStream->SessionId()); + MOZ_ASSERT(session); + Http3WebTransportSession* wtSession = session->GetHttp3WebTransportSession(); + MOZ_ASSERT(wtSession); + + wtSession->RemoveWebTransportStream(wtStream); + + // WebTransportStream is managed by Http3Session now. + mWebTransportStreams.AppendElement(wtStream); + mWebTransportStreamToSessionMap.InsertOrUpdate(*aStreamId, + session->StreamId()); + mStreamIdHash.InsertOrUpdate(*aStreamId, std::move(wtStream)); + return NS_OK; +} + +// This is only called by Http3Stream::OnReadSegment. +// ProcessOutput will be called in Http3Session::ReadSegment that +// calls Http3Stream::OnReadSegment. +void Http3Session::CloseSendingSide(uint64_t aStreamId) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + mHttp3Connection->CloseStream(aStreamId); +} + +// This is only called by Http3Stream::OnReadSegment. +// ProcessOutput will be called in Http3Session::ReadSegment that +// calls Http3Stream::OnReadSegment. +nsresult Http3Session::SendRequestBody(uint64_t aStreamId, const char* buf, + uint32_t count, uint32_t* countRead) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + nsresult rv = mHttp3Connection->SendRequestBody( + aStreamId, (const uint8_t*)buf, count, countRead); + if (rv == NS_BASE_STREAM_WOULD_BLOCK) { + mTransactionsSenderBlockedByFlowControlCount++; + } else if (NS_FAILED(rv)) { + // Ignore this error. This may happen if some events are not handled yet. + // TODO we may try to add an assertion here. + // We will pretend that sender is blocked, that will cause the caller to + // stop trying. + *countRead = 0; + rv = NS_BASE_STREAM_WOULD_BLOCK; + } + + MOZ_ASSERT((*countRead != 0) || NS_FAILED(rv)); + return rv; +} + +void Http3Session::ResetOrStopSendingRecvd(uint64_t aStreamId, uint64_t aError, + ResetType aType) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + + uint64_t sessionId = 0; + if (mWebTransportStreamToSessionMap.Get(aStreamId, &sessionId)) { + uint8_t wtError = Http3ErrorToWebTransportError(aError); + nsresult rv = GetNSResultFromWebTransportError(wtError); + + RefPtr<Http3StreamBase> stream = mStreamIdHash.Get(aStreamId); + if (stream) { + if (aType == RESET) { + stream->SetRecvdReset(); + } + RefPtr<Http3WebTransportStream> wtStream = + stream->GetHttp3WebTransportStream(); + if (wtStream) { + CloseWebTransportStream(wtStream, rv); + } + } + + RefPtr<Http3StreamBase> session = mStreamIdHash.Get(sessionId); + if (session) { + Http3WebTransportSession* wtSession = + session->GetHttp3WebTransportSession(); + MOZ_ASSERT(wtSession); + if (wtSession) { + if (aType == RESET) { + wtSession->OnStreamReset(aStreamId, rv); + } else { + wtSession->OnStreamStopSending(aStreamId, rv); + } + } + } + return; + } + + RefPtr<Http3StreamBase> stream = mStreamIdHash.Get(aStreamId); + if (!stream) { + return; + } + + RefPtr<Http3Stream> httpStream = stream->GetHttp3Stream(); + if (!httpStream) { + return; + } + + // We only handle some of Http3 error as epecial, the rest are just equivalent + // to cancel. + if (aError == HTTP3_APP_ERROR_VERSION_FALLBACK) { + // We will restart the request and the alt-svc will be removed + // automatically. + // Also disable http3 we want http1.1. + httpStream->Transaction()->DisableHttp3(false); + httpStream->Transaction()->DisableSpdy(); + CloseStream(stream, NS_ERROR_NET_RESET); + } else if (aError == HTTP3_APP_ERROR_REQUEST_REJECTED) { + // This request was rejected because server is probably busy or going away. + // We can restart the request using alt-svc. Without calling + // DoNotRemoveAltSvc the alt-svc route will be removed. + httpStream->Transaction()->DoNotRemoveAltSvc(); + CloseStream(stream, NS_ERROR_NET_RESET); + } else { + if (httpStream->RecvdData()) { + CloseStream(stream, NS_ERROR_NET_PARTIAL_TRANSFER); + } else { + CloseStream(stream, NS_ERROR_NET_INTERRUPT); + } + } +} + +void Http3Session::SetConnection(nsAHttpConnection* aConn) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + mConnection = aConn; +} + +void Http3Session::GetSecurityCallbacks(nsIInterfaceRequestor** aOut) { + *aOut = nullptr; +} + +// TODO +void Http3Session::OnTransportStatus(nsITransport* aTransport, nsresult aStatus, + int64_t aProgress) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + + if ((aStatus == NS_NET_STATUS_CONNECTED_TO) && !IsConnected()) { + // We should ignore the event. This is sent by the nsSocketTranpsort + // and it does not mean that HTTP3 session is connected. + // We will use this event to mark start of TLS handshake + aStatus = NS_NET_STATUS_TLS_HANDSHAKE_STARTING; + } + + switch (aStatus) { + // These should appear only once, deliver to the first + // transaction on the session. + case NS_NET_STATUS_RESOLVING_HOST: + case NS_NET_STATUS_RESOLVED_HOST: + case NS_NET_STATUS_CONNECTING_TO: + case NS_NET_STATUS_CONNECTED_TO: + case NS_NET_STATUS_TLS_HANDSHAKE_STARTING: + case NS_NET_STATUS_TLS_HANDSHAKE_ENDED: { + if (!mFirstHttpTransaction) { + // if we still do not have a HttpTransaction store timings info in + // a HttpConnection. + // If some error occur it can happen that we do not have a connection. + if (mConnection) { + RefPtr<HttpConnectionBase> conn = mConnection->HttpConnection(); + conn->SetEvent(aStatus); + } + } else { + mFirstHttpTransaction->OnTransportStatus(aTransport, aStatus, + aProgress); + } + + if (aStatus == NS_NET_STATUS_CONNECTED_TO) { + mFirstHttpTransaction = nullptr; + } + break; + } + + default: + // The other transport events are ignored here because there is no good + // way to map them to the right transaction in HTTP3. Instead, the events + // are generated again from the HTTP3 code and passed directly to the + // correct transaction. + + // NS_NET_STATUS_SENDING_TO: + // This is generated by the socket transport when (part) of + // a transaction is written out + // + // There is no good way to map it to the right transaction in HTTP3, + // so it is ignored here and generated separately when the request + // is sent from Http3Stream. + + // NS_NET_STATUS_WAITING_FOR: + // Created by nsHttpConnection when the request has been totally sent. + // There is no good way to map it to the right transaction in HTTP3, + // so it is ignored here and generated separately when the same + // condition is complete in Http3Stream when there is no more + // request body left to be transmitted. + + // NS_NET_STATUS_RECEIVING_FROM + // Generated in Http3Stream whenever the stream reads data. + + break; + } +} + +bool Http3Session::IsDone() { return mState == CLOSED; } + +nsresult Http3Session::Status() { + MOZ_ASSERT(false, "Http3Session::Status()"); + return NS_ERROR_UNEXPECTED; +} + +uint32_t Http3Session::Caps() { + MOZ_ASSERT(false, "Http3Session::Caps()"); + return 0; +} + +nsresult Http3Session::ReadSegments(nsAHttpSegmentReader* reader, + uint32_t count, uint32_t* countRead) { + MOZ_ASSERT(false, "Http3Session::ReadSegments()"); + return NS_ERROR_UNEXPECTED; +} + +nsresult Http3Session::SendData(nsIUDPSocket* socket) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + + LOG(("Http3Session::SendData [this=%p]", this)); + + // 1) go through all streams/transactions that are ready to write and + // write their data into quic streams (no network write yet). + // 2) call ProcessOutput that will loop until all available packets are + // written to a socket or the socket returns an error code. + // 3) if we still have streams ready to write call ResumeSend()(we may + // still have such streams because on an stream error we return earlier + // to let the error be handled). + // 4) + + nsresult rv = NS_OK; + RefPtr<Http3StreamBase> stream; + + // Step 1) + while (CanSendData() && (stream = mReadyForWrite.PopFront())) { + LOG(("Http3Session::SendData call ReadSegments from stream=%p [this=%p]", + stream.get(), this)); + + rv = stream->ReadSegments(); + + // on stream error we return earlier to let the error be handled. + if (NS_FAILED(rv)) { + LOG3(("Http3Session::SendData %p returns error code 0x%" PRIx32, this, + static_cast<uint32_t>(rv))); + MOZ_ASSERT(rv != NS_BASE_STREAM_WOULD_BLOCK); + if (rv == NS_BASE_STREAM_WOULD_BLOCK) { // Just in case! + rv = NS_OK; + } else if (ASpdySession::SoftStreamError(rv)) { + CloseStream(stream, rv); + LOG3(("Http3Session::SendData %p soft error override\n", this)); + rv = NS_OK; + } else { + break; + } + } + } + + if (NS_SUCCEEDED(rv)) { + // Step 2: + // Call actual network write. + rv = ProcessOutput(socket); + } + + // Step 3: + MaybeResumeSend(); + + if (rv == NS_BASE_STREAM_WOULD_BLOCK) { + rv = NS_OK; + } + + // Let the connection know we sent some app data successfully. + if (stream && NS_SUCCEEDED(rv)) { + mUdpConn->NotifyDataWrite(); + } + + return rv; +} + +void Http3Session::StreamReadyToWrite(Http3StreamBase* aStream) { + MOZ_ASSERT(aStream); + mReadyForWrite.Push(aStream); + if (CanSendData() && mConnection) { + Unused << mConnection->ResumeSend(); + } +} + +void Http3Session::MaybeResumeSend() { + if ((mReadyForWrite.GetSize() > 0) && CanSendData() && mConnection) { + Unused << mConnection->ResumeSend(); + } +} + +nsresult Http3Session::ProcessSlowConsumers() { + if (mSlowConsumersReadyForRead.IsEmpty()) { + return NS_OK; + } + + RefPtr<Http3StreamBase> slowConsumer = + mSlowConsumersReadyForRead.ElementAt(0); + mSlowConsumersReadyForRead.RemoveElementAt(0); + + nsresult rv = ProcessTransactionRead(slowConsumer); + + return rv; +} + +nsresult Http3Session::WriteSegments(nsAHttpSegmentWriter* writer, + uint32_t count, uint32_t* countWritten) { + MOZ_ASSERT(false, "Http3Session::WriteSegments()"); + return NS_ERROR_UNEXPECTED; +} + +nsresult Http3Session::RecvData(nsIUDPSocket* socket) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + + // Process slow consumers. + nsresult rv = ProcessSlowConsumers(); + if (NS_FAILED(rv)) { + LOG3(("Http3Session %p ProcessSlowConsumers returns 0x%" PRIx32 "\n", this, + static_cast<uint32_t>(rv))); + return rv; + } + + ProcessInput(socket); + + rv = ProcessEvents(); + if (NS_FAILED(rv)) { + return rv; + } + + rv = SendData(socket); + if (NS_FAILED(rv)) { + return rv; + } + + return NS_OK; +} + +const uint32_t HTTP3_TELEMETRY_APP_NECKO = 42; + +void Http3Session::Close(nsresult aReason) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + + LOG(("Http3Session::Close [this=%p]", this)); + + if (NS_FAILED(mError)) { + CloseInternal(false); + } else { + mError = aReason; + // If necko closes connection, this will map to the "closing" key and the + // value HTTP3_TELEMETRY_APP_NECKO. + Telemetry::Accumulate(Telemetry::HTTP3_CONNECTION_CLOSE_CODE_3, + "app_closing"_ns, HTTP3_TELEMETRY_APP_NECKO); + CloseInternal(true); + } + + if (mCleanShutdown || mIsClosedByNeqo || NS_FAILED(mSocketError)) { + // It is network-tear-down, a socker error or neqo is state CLOSED + // (it does not need to send any more packets or wait for new packets). + // We need to remove all references, so that + // Http3Session will be destroyed. + if (mTimer) { + mTimer->Cancel(); + } + mTimer = nullptr; + mConnection = nullptr; + mUdpConn = nullptr; + mState = CLOSED; + } + if (mConnection) { + // resume sending to send CLOSE_CONNECTION frame. + Unused << mConnection->ResumeSend(); + } +} + +void Http3Session::CloseInternal(bool aCallNeqoClose) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + + if (IsClosing()) { + return; + } + + LOG(("Http3Session::Closing [this=%p]", this)); + + if (mState != CONNECTED) { + mBeforeConnectedError = true; + } + + if (mState == ZERORTT) { + ZeroRttTelemetry(aCallNeqoClose ? ZeroRttOutcome::USED_CONN_CLOSED_BY_NECKO + : ZeroRttOutcome::USED_CONN_ERROR); + } + + mState = CLOSING; + Shutdown(); + + if (aCallNeqoClose) { + mHttp3Connection->Close(HTTP3_APP_ERROR_NO_ERROR); + } + + mStreamIdHash.Clear(); + mStreamTransactionHash.Clear(); +} + +nsHttpConnectionInfo* Http3Session::ConnectionInfo() { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + RefPtr<nsHttpConnectionInfo> ci; + GetConnectionInfo(getter_AddRefs(ci)); + return ci.get(); +} + +void Http3Session::SetProxyConnectFailed() { + MOZ_ASSERT(false, "Http3Session::SetProxyConnectFailed()"); +} + +nsHttpRequestHead* Http3Session::RequestHead() { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + MOZ_ASSERT(false, + "Http3Session::RequestHead() " + "should not be called after http/3 is setup"); + return nullptr; +} + +uint32_t Http3Session::Http1xTransactionCount() { return 0; } + +nsresult Http3Session::TakeSubTransactions( + nsTArray<RefPtr<nsAHttpTransaction>>& outTransactions) { + return NS_OK; +} + +//----------------------------------------------------------------------------- +// Pass through methods of nsAHttpConnection +//----------------------------------------------------------------------------- + +nsAHttpConnection* Http3Session::Connection() { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + return mConnection; +} + +nsresult Http3Session::OnHeadersAvailable(nsAHttpTransaction* transaction, + nsHttpRequestHead* requestHead, + nsHttpResponseHead* responseHead, + bool* reset) { + MOZ_ASSERT(mConnection); + if (mConnection) { + return mConnection->OnHeadersAvailable(transaction, requestHead, + responseHead, reset); + } + return NS_OK; +} + +bool Http3Session::IsReused() { + if (mConnection) { + return mConnection->IsReused(); + } + return true; +} + +nsresult Http3Session::PushBack(const char* buf, uint32_t len) { + return NS_ERROR_UNEXPECTED; +} + +already_AddRefed<HttpConnectionBase> Http3Session::TakeHttpConnection() { + MOZ_ASSERT(false, "TakeHttpConnection of Http3Session"); + return nullptr; +} + +already_AddRefed<HttpConnectionBase> Http3Session::HttpConnection() { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + if (mConnection) { + return mConnection->HttpConnection(); + } + return nullptr; +} + +void Http3Session::CloseTransaction(nsAHttpTransaction* aTransaction, + nsresult aResult) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + LOG3(("Http3Session::CloseTransaction %p %p 0x%" PRIx32, this, aTransaction, + static_cast<uint32_t>(aResult))); + + // Generally this arrives as a cancel event from the connection manager. + + // need to find the stream and call CloseStream() on it. + RefPtr<Http3StreamBase> stream = mStreamTransactionHash.Get(aTransaction); + if (!stream) { + LOG3(("Http3Session::CloseTransaction %p %p 0x%" PRIx32 " - not found.", + this, aTransaction, static_cast<uint32_t>(aResult))); + return; + } + LOG3( + ("Http3Session::CloseTransaction probably a cancel. this=%p, " + "trans=%p, result=0x%" PRIx32 ", streamId=0x%" PRIx64 " stream=%p", + this, aTransaction, static_cast<uint32_t>(aResult), stream->StreamId(), + stream.get())); + CloseStream(stream, aResult); + if (mConnection) { + Unused << mConnection->ResumeSend(); + } +} + +void Http3Session::CloseStream(Http3StreamBase* aStream, nsresult aResult) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + RefPtr<Http3WebTransportStream> wtStream = + aStream->GetHttp3WebTransportStream(); + if (wtStream) { + CloseWebTransportStream(wtStream, aResult); + return; + } + + RefPtr<Http3Stream> httpStream = aStream->GetHttp3Stream(); + if (httpStream && !httpStream->RecvdFin() && !httpStream->RecvdReset() && + httpStream->HasStreamId()) { + mHttp3Connection->CancelFetch(httpStream->StreamId(), + HTTP3_APP_ERROR_REQUEST_CANCELLED); + } + + aStream->Close(aResult); + CloseStreamInternal(aStream, aResult); +} + +void Http3Session::CloseStreamInternal(Http3StreamBase* aStream, + nsresult aResult) { + LOG3(("Http3Session::CloseStreamInternal %p %p 0x%" PRIx32, this, aStream, + static_cast<uint32_t>(aResult))); + if (aStream->HasStreamId()) { + // We know the transaction reusing an idle connection has succeeded or + // failed. + if (mFirstStreamIdReuseIdleConnection.isSome() && + aStream->StreamId() == *mFirstStreamIdReuseIdleConnection) { + MOZ_ASSERT(mConnectionIdleStart); + MOZ_ASSERT(mConnectionIdleEnd); + + if (mConnectionIdleStart) { + Telemetry::AccumulateTimeDelta( + Telemetry::HTTP3_TIME_TO_REUSE_IDLE_CONNECTTION_MS, + NS_SUCCEEDED(aResult) ? "succeeded"_ns : "failed"_ns, + mConnectionIdleStart, mConnectionIdleEnd); + } + + mConnectionIdleStart = TimeStamp(); + mConnectionIdleEnd = TimeStamp(); + mFirstStreamIdReuseIdleConnection.reset(); + } + + mStreamIdHash.Remove(aStream->StreamId()); + + // Start to idle when we remove the last stream. + if (mStreamIdHash.IsEmpty()) { + mConnectionIdleStart = TimeStamp::Now(); + } + } + RemoveStreamFromQueues(aStream); + if (nsAHttpTransaction* transaction = aStream->Transaction()) { + mStreamTransactionHash.Remove(transaction); + } + mWebTransportSessions.RemoveElement(aStream); + mWebTransportStreams.RemoveElement(aStream); + // Close(NS_OK) implies that the NeqoHttp3Conn will be closed, so we can only + // do this when there is no Http3Steeam, WebTransportSession and + // WebTransportStream. + if ((mShouldClose || mGoawayReceived) && + (!mStreamTransactionHash.Count() && mWebTransportSessions.IsEmpty() && + mWebTransportStreams.IsEmpty())) { + MOZ_ASSERT(!IsClosing()); + Close(NS_OK); + } +} + +void Http3Session::CloseWebTransportStream(Http3WebTransportStream* aStream, + nsresult aResult) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + LOG3(("Http3Session::CloseWebTransportStream %p %p 0x%" PRIx32, this, aStream, + static_cast<uint32_t>(aResult))); + if (aStream && !aStream->RecvdFin() && !aStream->RecvdReset() && + (aStream->HasStreamId())) { + mHttp3Connection->ResetStream(aStream->StreamId(), + HTTP3_APP_ERROR_REQUEST_CANCELLED); + } + + aStream->Close(aResult); + CloseStreamInternal(aStream, aResult); +} + +void Http3Session::ResetWebTransportStream(Http3WebTransportStream* aStream, + uint64_t aErrorCode) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + LOG3(("Http3Session::ResetWebTransportStream %p %p 0x%" PRIx64, this, aStream, + aErrorCode)); + mHttp3Connection->ResetStream(aStream->StreamId(), aErrorCode); +} + +void Http3Session::StreamStopSending(Http3WebTransportStream* aStream, + uint8_t aErrorCode) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + LOG(("Http3Session::StreamStopSending %p %p 0x%" PRIx32, this, aStream, + static_cast<uint32_t>(aErrorCode))); + mHttp3Connection->StreamStopSending(aStream->StreamId(), aErrorCode); +} + +nsresult Http3Session::TakeTransport(nsISocketTransport**, + nsIAsyncInputStream**, + nsIAsyncOutputStream**) { + MOZ_ASSERT(false, "TakeTransport of Http3Session"); + return NS_ERROR_UNEXPECTED; +} + +Http3WebTransportSession* Http3Session::GetWebTransportSession( + nsAHttpTransaction* aTransaction) { + RefPtr<Http3StreamBase> stream = mStreamTransactionHash.Get(aTransaction); + + if (!stream || !stream->GetHttp3WebTransportSession()) { + MOZ_ASSERT(false, "There must be a stream"); + return nullptr; + } + RemoveStreamFromQueues(stream); + mStreamTransactionHash.Remove(aTransaction); + mWebTransportSessions.AppendElement(stream); + return stream->GetHttp3WebTransportSession(); +} + +bool Http3Session::IsPersistent() { return true; } + +void Http3Session::DontReuse() { + LOG3(("Http3Session::DontReuse %p\n", this)); + if (!OnSocketThread()) { + LOG3(("Http3Session %p not on socket thread\n", this)); + nsCOMPtr<nsIRunnable> event = NewRunnableMethod( + "Http3Session::DontReuse", this, &Http3Session::DontReuse); + gSocketTransportService->Dispatch(event, NS_DISPATCH_NORMAL); + return; + } + + if (mGoawayReceived || IsClosing()) { + return; + } + + mShouldClose = true; + if (!mStreamTransactionHash.Count()) { + Close(NS_OK); + } +} + +void Http3Session::CloseWebTransportConn() { + LOG3(("Http3Session::CloseWebTransportConn %p\n", this)); + // We need to dispatch, since Http3Session could be released in + // HttpConnectionUDP::CloseTransaction. + gSocketTransportService->Dispatch( + NS_NewRunnableFunction("Http3Session::CloseWebTransportConn", + [self = RefPtr{this}]() { + if (self->mUdpConn) { + self->mUdpConn->CloseTransaction( + self, NS_ERROR_ABORT); + } + }), + NS_DISPATCH_NORMAL); +} + +void Http3Session::CurrentBrowserIdChanged(uint64_t id) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + + mCurrentBrowserId = id; + + for (const auto& stream : mStreamTransactionHash.Values()) { + RefPtr<Http3Stream> httpStream = stream->GetHttp3Stream(); + if (httpStream) { + httpStream->CurrentBrowserIdChanged(id); + } + } +} + +// This is called by Http3Stream::OnWriteSegment. +nsresult Http3Session::ReadResponseData(uint64_t aStreamId, char* aBuf, + uint32_t aCount, + uint32_t* aCountWritten, bool* aFin) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + + nsresult rv = mHttp3Connection->ReadResponseData(aStreamId, (uint8_t*)aBuf, + aCount, aCountWritten, aFin); + + // This should not happen, i.e. stream must be present in neqo and in necko at + // the same time. + MOZ_ASSERT(rv != NS_ERROR_INVALID_ARG); + if (NS_FAILED(rv)) { + LOG3(("Http3Session::ReadResponseData return an error %" PRIx32 + " [this=%p]", + static_cast<uint32_t>(rv), this)); + // This error will be handled by neqo and the whole connection will be + // closed. We will return NS_BASE_STREAM_WOULD_BLOCK here. + *aCountWritten = 0; + *aFin = false; + rv = NS_BASE_STREAM_WOULD_BLOCK; + } + + MOZ_ASSERT((*aCountWritten != 0) || aFin || NS_FAILED(rv)); + return rv; +} + +void Http3Session::TransactionHasDataToWrite(nsAHttpTransaction* caller) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + LOG3(("Http3Session::TransactionHasDataToWrite %p trans=%p", this, caller)); + + // a trapped signal from the http transaction to the connection that + // it is no longer blocked on read. + + RefPtr<Http3StreamBase> stream = mStreamTransactionHash.Get(caller); + if (!stream) { + LOG3(("Http3Session::TransactionHasDataToWrite %p caller %p not found", + this, caller)); + return; + } + + LOG3(("Http3Session::TransactionHasDataToWrite %p ID is 0x%" PRIx64, this, + stream->StreamId())); + + StreamHasDataToWrite(stream); +} + +void Http3Session::StreamHasDataToWrite(Http3StreamBase* aStream) { + if (!IsClosing()) { + StreamReadyToWrite(aStream); + } else { + LOG3( + ("Http3Session::TransactionHasDataToWrite %p closed so not setting " + "Ready4Write\n", + this)); + } + + // NSPR poll will not poll the network if there are non system PR_FileDesc's + // that are ready - so we can get into a deadlock waiting for the system IO + // to come back here if we don't force the send loop manually. + Unused << ForceSend(); +} + +void Http3Session::TransactionHasDataToRecv(nsAHttpTransaction* caller) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + LOG3(("Http3Session::TransactionHasDataToRecv %p trans=%p", this, caller)); + + // a signal from the http transaction to the connection that it will consume + // more + RefPtr<Http3StreamBase> stream = mStreamTransactionHash.Get(caller); + if (!stream) { + LOG3(("Http3Session::TransactionHasDataToRecv %p caller %p not found", this, + caller)); + return; + } + + LOG3(("Http3Session::TransactionHasDataToRecv %p ID is 0x%" PRIx64 "\n", this, + stream->StreamId())); + ConnectSlowConsumer(stream); +} + +void Http3Session::ConnectSlowConsumer(Http3StreamBase* stream) { + LOG3(("Http3Session::ConnectSlowConsumer %p 0x%" PRIx64 "\n", this, + stream->StreamId())); + mSlowConsumersReadyForRead.AppendElement(stream); + Unused << ForceRecv(); +} + +bool Http3Session::TestJoinConnection(const nsACString& hostname, + int32_t port) { + return RealJoinConnection(hostname, port, true); +} + +bool Http3Session::JoinConnection(const nsACString& hostname, int32_t port) { + return RealJoinConnection(hostname, port, false); +} + +// TODO test +bool Http3Session::RealJoinConnection(const nsACString& hostname, int32_t port, + bool justKidding) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + if (!mConnection || !CanSendData() || mShouldClose || mGoawayReceived) { + return false; + } + + nsHttpConnectionInfo* ci = ConnectionInfo(); + if (nsCString(hostname).EqualsIgnoreCase(ci->Origin()) && + (port == ci->OriginPort())) { + return true; + } + + nsAutoCString key(hostname); + key.Append(':'); + key.Append(justKidding ? 'k' : '.'); + key.AppendInt(port); + bool cachedResult; + if (mJoinConnectionCache.Get(key, &cachedResult)) { + LOG(("joinconnection [%p %s] %s result=%d cache\n", this, + ConnectionInfo()->HashKey().get(), key.get(), cachedResult)); + return cachedResult; + } + + nsresult rv; + bool isJoined = false; + + nsCOMPtr<nsITLSSocketControl> sslSocketControl; + mConnection->GetTLSSocketControl(getter_AddRefs(sslSocketControl)); + if (!sslSocketControl) { + return false; + } + + bool joinedReturn = false; + if (justKidding) { + rv = sslSocketControl->TestJoinConnection(mConnInfo->GetNPNToken(), + hostname, port, &isJoined); + } else { + rv = sslSocketControl->JoinConnection(mConnInfo->GetNPNToken(), hostname, + port, &isJoined); + } + if (NS_SUCCEEDED(rv) && isJoined) { + joinedReturn = true; + } + + LOG(("joinconnection [%p %s] %s result=%d lookup\n", this, + ConnectionInfo()->HashKey().get(), key.get(), joinedReturn)); + mJoinConnectionCache.InsertOrUpdate(key, joinedReturn); + if (!justKidding) { + // cache a kidding entry too as this one is good for both + nsAutoCString key2(hostname); + key2.Append(':'); + key2.Append('k'); + key2.AppendInt(port); + if (!mJoinConnectionCache.Get(key2)) { + mJoinConnectionCache.InsertOrUpdate(key2, joinedReturn); + } + } + return joinedReturn; +} + +void Http3Session::CallCertVerification(Maybe<nsCString> aEchPublicName) { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + LOG(("Http3Session::CallCertVerification [this=%p]", this)); + + NeqoCertificateInfo certInfo; + if (NS_FAILED(mHttp3Connection->PeerCertificateInfo(&certInfo))) { + LOG(("Http3Session::CallCertVerification [this=%p] - no cert", this)); + mHttp3Connection->PeerAuthenticated(SSL_ERROR_BAD_CERTIFICATE); + mError = psm::GetXPCOMFromNSSError(SSL_ERROR_BAD_CERTIFICATE); + return; + } + + Maybe<nsTArray<nsTArray<uint8_t>>> stapledOCSPResponse; + if (certInfo.stapled_ocsp_responses_present) { + stapledOCSPResponse.emplace(std::move(certInfo.stapled_ocsp_responses)); + } + + Maybe<nsTArray<uint8_t>> sctsFromTLSExtension; + if (certInfo.signed_cert_timestamp_present) { + sctsFromTLSExtension.emplace(std::move(certInfo.signed_cert_timestamp)); + } + + uint32_t providerFlags; + // the return value is always NS_OK, just ignore it. + Unused << mSocketControl->GetProviderFlags(&providerFlags); + + nsCString echConfig; + nsresult nsrv = mSocketControl->GetEchConfig(echConfig); + bool verifyToEchPublicName = NS_SUCCEEDED(nsrv) && !echConfig.IsEmpty() && + aEchPublicName && !aEchPublicName->IsEmpty(); + const nsACString& hostname = + verifyToEchPublicName ? *aEchPublicName : mSocketControl->GetHostName(); + + SECStatus rv = psm::AuthCertificateHookWithInfo( + mSocketControl, hostname, static_cast<const void*>(this), + std::move(certInfo.certs), stapledOCSPResponse, sctsFromTLSExtension, + providerFlags); + if ((rv != SECSuccess) && (rv != SECWouldBlock)) { + LOG(("Http3Session::CallCertVerification [this=%p] AuthCertificate failed", + this)); + mHttp3Connection->PeerAuthenticated(SSL_ERROR_BAD_CERTIFICATE); + mError = psm::GetXPCOMFromNSSError(SSL_ERROR_BAD_CERTIFICATE); + } +} + +void Http3Session::Authenticated(int32_t aError) { + LOG(("Http3Session::Authenticated error=0x%" PRIx32 " [this=%p].", aError, + this)); + if ((mState == INITIALIZING) || (mState == ZERORTT)) { + if (psm::IsNSSErrorCode(aError)) { + mError = psm::GetXPCOMFromNSSError(aError); + LOG(("Http3Session::Authenticated psm-error=0x%" PRIx32 " [this=%p].", + static_cast<uint32_t>(mError), this)); + } + mHttp3Connection->PeerAuthenticated(aError); + + // Call OnQuicTimeoutExpired to properly process neqo events and outputs. + // We call OnQuicTimeoutExpired instead of ProcessOutputAndEvents, because + // HttpConnectionUDP must close this session in case of an error. + NS_DispatchToCurrentThread( + NewRunnableMethod("net::HttpConnectionUDP::OnQuicTimeoutExpired", + mUdpConn, &HttpConnectionUDP::OnQuicTimeoutExpired)); + mUdpConn->ChangeConnectionState(ConnectionState::TRANSFERING); + } +} + +void Http3Session::SetSecInfo() { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + NeqoSecretInfo secInfo; + if (NS_SUCCEEDED(mHttp3Connection->GetSecInfo(&secInfo))) { + mSocketControl->SetSSLVersionUsed(secInfo.version); + mSocketControl->SetResumed(secInfo.resumed); + mSocketControl->SetNegotiatedNPN(secInfo.alpn); + + mSocketControl->SetInfo(secInfo.cipher, secInfo.version, secInfo.group, + secInfo.signature_scheme, secInfo.ech_accepted); + mHandshakeSucceeded = true; + } + + if (!mSocketControl->HasServerCert()) { + mSocketControl->RebuildCertificateInfoFromSSLTokenCache(); + } +} + +// Transport error have values from 0x0 to 0x11. +// (https://tools.ietf.org/html/draft-ietf-quic-transport-34#section-20.1) +// We will map this error to 0-16. +// 17 will capture error codes between and including 0x12 and 0x0ff. This +// error codes are not define by the spec but who know peer may sent them. +// CryptoAlerts have value 0x100 + alert code. The range of alert code is +// 0x00-0xff. (https://tools.ietf.org/html/draft-ietf-quic-tls_34#section-4.8) +// Since telemetry does not allow more than 100 bucket, we use three diffrent +// keys to map all alert codes. +const uint32_t HTTP3_TELEMETRY_TRANSPORT_INTERNAL_ERROR = 15; +const uint32_t HTTP3_TELEMETRY_TRANSPORT_END = 16; +const uint32_t HTTP3_TELEMETRY_TRANSPORT_UNKNOWN = 17; +const uint32_t HTTP3_TELEMETRY_TRANSPORT_CRYPTO_UNKNOWN = 18; +// All errors from CloseError::Tag::CryptoError will be map to 19 +const uint32_t HTTP3_TELEMETRY_CRYPTO_ERROR = 19; + +uint64_t GetCryptoAlertCode(nsCString& key, uint64_t error) { + if (error < 100) { + key.Append("_a"_ns); + return error; + } + if (error < 200) { + error -= 100; + key.Append("_b"_ns); + return error; + } + if (error < 256) { + error -= 200; + key.Append("_c"_ns); + return error; + } + return HTTP3_TELEMETRY_TRANSPORT_CRYPTO_UNKNOWN; +} + +uint64_t GetTransportErrorCodeForTelemetry(nsCString& key, uint64_t error) { + if (error <= HTTP3_TELEMETRY_TRANSPORT_END) { + return error; + } + if (error < 0x100) { + return HTTP3_TELEMETRY_TRANSPORT_UNKNOWN; + } + + return GetCryptoAlertCode(key, error - 0x100); +} + +// Http3 error codes are 0x100-0x110. +// (https://tools.ietf.org/html/draft-ietf-quic-http-33#section-8.1) +// The mapping is described below. +// 0x00-0x10 mapped to 0-16 +// 0x11-0xff mapped to 17 +// 0x100-0x110 mapped to 18-36 +// 0x111-0x1ff mapped to 37 +// 0x200-0x202 mapped to 38-40 +// Others mapped to 41 +const uint32_t HTTP3_TELEMETRY_APP_UNKNOWN_1 = 17; +const uint32_t HTTP3_TELEMETRY_APP_START = 18; +// Values between 0x111 and 0x1ff are no definded and will be map to 18. +const uint32_t HTTP3_TELEMETRY_APP_UNKNOWN_2 = 37; +// Error codes between 0x200 and 0x202 are related to qpack. +// (https://tools.ietf.org/html/draft-ietf-quic-qpack-20#section-6) +// They will be mapped to 19-21 +const uint32_t HTTP3_TELEMETRY_APP_QPACK_START = 38; +// Values greater or equal to 0x203 are no definded and will be map to 41. +const uint32_t HTTP3_TELEMETRY_APP_UNKNOWN_3 = 41; + +uint64_t GetAppErrorCodeForTelemetry(uint64_t error) { + if (error <= 0x10) { + return error; + } + if (error <= 0xff) { + return HTTP3_TELEMETRY_APP_UNKNOWN_1; + } + if (error <= 0x110) { + return error - 0x100 + HTTP3_TELEMETRY_APP_START; + } + if (error < 0x200) { + return HTTP3_TELEMETRY_APP_UNKNOWN_2; + } + if (error <= 0x202) { + return error - 0x200 + HTTP3_TELEMETRY_APP_QPACK_START; + } + return HTTP3_TELEMETRY_APP_UNKNOWN_3; +} + +void Http3Session::CloseConnectionTelemetry(CloseError& aError, bool aClosing) { + uint64_t value = 0; + nsCString key = EmptyCString(); + + switch (aError.tag) { + case CloseError::Tag::TransportInternalError: + key = "transport_internal"_ns; + value = HTTP3_TELEMETRY_TRANSPORT_INTERNAL_ERROR; + break; + case CloseError::Tag::TransportInternalErrorOther: + key = "transport_other"_ns; + value = aError.transport_internal_error_other._0; + break; + case CloseError::Tag::TransportError: + key = "transport"_ns; + value = GetTransportErrorCodeForTelemetry(key, aError.transport_error._0); + break; + case CloseError::Tag::CryptoError: + key = "transport"_ns; + value = HTTP3_TELEMETRY_CRYPTO_ERROR; + break; + case CloseError::Tag::CryptoAlert: + key = "transport_crypto_alert"_ns; + value = GetCryptoAlertCode(key, aError.crypto_alert._0); + break; + case CloseError::Tag::PeerAppError: + key = "peer_app"_ns; + value = GetAppErrorCodeForTelemetry(aError.peer_app_error._0); + break; + case CloseError::Tag::PeerError: + key = "peer_transport"_ns; + value = GetTransportErrorCodeForTelemetry(key, aError.peer_error._0); + break; + case CloseError::Tag::AppError: + key = "app"_ns; + value = GetAppErrorCodeForTelemetry(aError.app_error._0); + break; + case CloseError::Tag::EchRetry: + key = "transport_crypto_alert"_ns; + value = 100; + } + + MOZ_DIAGNOSTIC_ASSERT(value <= 100); + + key.Append(aClosing ? "_closing"_ns : "_closed"_ns); + + Telemetry::Accumulate(Telemetry::HTTP3_CONNECTION_CLOSE_CODE_3, key, value); + + Http3Stats stats{}; + mHttp3Connection->GetStats(&stats); + + if (stats.packets_tx > 0) { + unsigned long loss = (stats.lost * 10000) / stats.packets_tx; + Telemetry::Accumulate(Telemetry::HTTP3_LOSS_RATIO, loss); + + Telemetry::Accumulate(Telemetry::HTTP3_LATE_ACK, "ack"_ns, stats.late_ack); + Telemetry::Accumulate(Telemetry::HTTP3_LATE_ACK, "pto"_ns, stats.pto_ack); + + unsigned long late_ack_ratio = (stats.late_ack * 10000) / stats.packets_tx; + unsigned long pto_ack_ratio = (stats.pto_ack * 10000) / stats.packets_tx; + Telemetry::Accumulate(Telemetry::HTTP3_LATE_ACK_RATIO, "ack"_ns, + late_ack_ratio); + Telemetry::Accumulate(Telemetry::HTTP3_LATE_ACK_RATIO, "pto"_ns, + pto_ack_ratio); + + for (uint32_t i = 0; i < MAX_PTO_COUNTS; i++) { + nsAutoCString key; + key.AppendInt(i); + Telemetry::Accumulate(Telemetry::HTTP3_COUNTS_PTO, key, + stats.pto_counts[i]); + } + + Telemetry::Accumulate(Telemetry::HTTP3_DROP_DGRAMS, stats.dropped_rx); + Telemetry::Accumulate(Telemetry::HTTP3_SAVED_DGRAMS, stats.saved_datagrams); + } + + Telemetry::Accumulate(Telemetry::HTTP3_RECEIVED_SENT_DGRAMS, "received"_ns, + stats.packets_rx); + Telemetry::Accumulate(Telemetry::HTTP3_RECEIVED_SENT_DGRAMS, "sent"_ns, + stats.packets_tx); +} + +void Http3Session::Finish0Rtt(bool aRestart) { + for (size_t i = 0; i < m0RTTStreams.Length(); ++i) { + if (m0RTTStreams[i]) { + if (aRestart) { + // When we need to restart transactions remove them from all lists. + if (m0RTTStreams[i]->HasStreamId()) { + mStreamIdHash.Remove(m0RTTStreams[i]->StreamId()); + } + RemoveStreamFromQueues(m0RTTStreams[i]); + // The stream is ready to write again. + mReadyForWrite.Push(m0RTTStreams[i]); + } + m0RTTStreams[i]->Finish0RTT(aRestart); + } + } + + for (size_t i = 0; i < mCannotDo0RTTStreams.Length(); ++i) { + if (mCannotDo0RTTStreams[i]) { + mReadyForWrite.Push(mCannotDo0RTTStreams[i]); + } + } + m0RTTStreams.Clear(); + mCannotDo0RTTStreams.Clear(); + MaybeResumeSend(); +} + +void Http3Session::ReportHttp3Connection() { + if (CanSendData() && !mHttp3ConnectionReported) { + mHttp3ConnectionReported = true; + gHttpHandler->ConnMgr()->ReportHttp3Connection(mUdpConn); + MaybeResumeSend(); + } +} + +void Http3Session::EchOutcomeTelemetry() { + MOZ_ASSERT(OnSocketThread(), "not on socket thread"); + + nsAutoCString key; + switch (mEchExtensionStatus) { + case EchExtensionStatus::kNotPresent: + key = "NONE"; + break; + case EchExtensionStatus::kGREASE: + key = "GREASE"; + break; + case EchExtensionStatus::kReal: + key = "REAL"; + break; + } + + Telemetry::Accumulate(Telemetry::HTTP3_ECH_OUTCOME, key, + mHandshakeSucceeded ? 0 : 1); +} + +void Http3Session::ZeroRttTelemetry(ZeroRttOutcome aOutcome) { + Telemetry::Accumulate(Telemetry::HTTP3_0RTT_STATE, aOutcome); + + nsAutoCString key; + + switch (aOutcome) { + case USED_SUCCEEDED: + key = "succeeded"_ns; + break; + case USED_REJECTED: + key = "rejected"_ns; + break; + case USED_CONN_ERROR: + key = "conn_error"_ns; + break; + case USED_CONN_CLOSED_BY_NECKO: + key = "conn_closed_by_necko"_ns; + break; + default: + break; + } + + if (!key.IsEmpty()) { + MOZ_ASSERT(mZeroRttStarted); + Telemetry::AccumulateTimeDelta(Telemetry::HTTP3_0RTT_STATE_DURATION, key, + mZeroRttStarted, TimeStamp::Now()); + } +} + +nsresult Http3Session::GetTransactionTLSSocketControl( + nsITLSSocketControl** tlsSocketControl) { + NS_IF_ADDREF(*tlsSocketControl = mSocketControl); + return NS_OK; +} + +PRIntervalTime Http3Session::LastWriteTime() { return mLastWriteTime; } + +void Http3Session::WebTransportNegotiationDone() { + for (size_t i = 0; i < mWaitingForWebTransportNegotiation.Length(); ++i) { + if (mWaitingForWebTransportNegotiation[i]) { + mReadyForWrite.Push(mWaitingForWebTransportNegotiation[i]); + } + } + mWaitingForWebTransportNegotiation.Clear(); + MaybeResumeSend(); +} + +//========================================================================= +// WebTransport +//========================================================================= + +nsresult Http3Session::CloseWebTransport(uint64_t aSessionId, uint32_t aError, + const nsACString& aMessage) { + return mHttp3Connection->CloseWebTransport(aSessionId, aError, aMessage); +} + +nsresult Http3Session::CreateWebTransportStream( + uint64_t aSessionId, WebTransportStreamType aStreamType, + uint64_t* aStreamId) { + return mHttp3Connection->CreateWebTransportStream(aSessionId, aStreamType, + aStreamId); +} + +void Http3Session::SendDatagram(Http3WebTransportSession* aSession, + nsTArray<uint8_t>& aData, + uint64_t aTrackingId) { + nsresult rv = mHttp3Connection->WebTransportSendDatagram(aSession->StreamId(), + aData, aTrackingId); + LOG(("Http3Session::SendDatagram %p res=%" PRIx32, this, + static_cast<uint32_t>(rv))); + if (!aTrackingId) { + return; + } + + switch (rv) { + case NS_OK: + aSession->OnOutgoingDatagramOutCome( + aTrackingId, WebTransportSessionEventListener::DatagramOutcome::SENT); + break; + case NS_ERROR_NOT_AVAILABLE: + aSession->OnOutgoingDatagramOutCome( + aTrackingId, WebTransportSessionEventListener::DatagramOutcome:: + DROPPED_TOO_MUCH_DATA); + break; + default: + aSession->OnOutgoingDatagramOutCome( + aTrackingId, + WebTransportSessionEventListener::DatagramOutcome::UNKNOWN); + break; + } +} + +uint64_t Http3Session::MaxDatagramSize(uint64_t aSessionId) { + uint64_t size = 0; + Unused << mHttp3Connection->WebTransportMaxDatagramSize(aSessionId, &size); + return size; +} + +void Http3Session::SetSendOrder(Http3StreamBase* aStream, + Maybe<int64_t> aSendOrder) { + if (!IsClosing()) { + nsresult rv = mHttp3Connection->WebTransportSetSendOrder( + aStream->StreamId(), aSendOrder); + MOZ_ASSERT(NS_SUCCEEDED(rv)); + Unused << rv; + } +} + +} // namespace mozilla::net |